53 lines
1.6 KiB
Bash
Executable file
53 lines
1.6 KiB
Bash
Executable file
#!/usr/bin/env sh
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# Configurable Variables
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DOCKER_SOCK_PATH="${DOCKER_SOCK_PATH:-/tmp/docker.sock}"
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NETWORK_NAME="${NETWORK_NAME:-proxy}"
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TEMPLATER_PATH="${TEMPLATER_PATH:-/docker-templater.sh}"
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TEMPLATE_FOLDER_PATH="${TEMPLATE_FOLDER_PATH:-/templates}"
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get_date() {
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printf '%s' "$(date +'%Y.%m.%d_%H:%M:%S')"
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}
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query_docker () {
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curl --unix-socket $DOCKER_SOCK_PATH --silent -g http://v1.41/$1$2
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}
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update_templates() {
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CONTAINER_LIST=$(query_docker "containers/json" "?filters={%22network%22:[%22${NETWORK_NAME}%22],%22status%22:[%22running%22]}")
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LABELS_NEW="$(echo "${CONTAINER_LIST}" | jq '.[].Labels | @base64' | sort)"
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if [ "${LABELS_NEW}" != "${LABELS_OLD}" ]
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then
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if [ -n "${LABELS_OLD}" ]
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then
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printf '%s | Container label list change detected.\n' "$(get_date)"
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fi
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LABELS_OLD="${LABELS_NEW}"
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for template in "${TEMPLATE_FOLDER_PATH}"/*
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do
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if ! "${TEMPLATER_PATH}" "${template}" "${CONTAINER_LIST}"
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then
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printf '%s | Error Processing Template: %s\n' "$(get_date)" "${template}"
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fi
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done
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fi
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}
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# Initial Generation
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update_templates
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# cannot filter because reailine no longer recognized lines otherwise (check how IFS changes)
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query_docker "events" | while true
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do
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printf '%s | Listening for docker events\n' "$(get_date)"
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read -r;
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# wait for related events to finish
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printf '%s | Waiting for event messages to settle.\n' "$(get_date)"
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while [ $? -eq 0 ]
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do
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read -t 8 -r
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done
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printf '%s | Checking for changes in container label list.\n' "$(get_date)"
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update_templates
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done
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